1. 25 Nov, 2011 1 commit
    • Scott LaVarnway's avatar
      Modified the inverse walsh to output directly · 4a91541c
      Scott LaVarnway authored
      to the dqcoeff or qcoeff buffer.  The encoder would
      populate the dc coeffs of the y blocks as a separate
      stage (recon_dcblock) and the decoder would use a special
      version of the idct.  This change eliminates the extra copy
      and reduces the code footprint.
      
      [Tero] Added needed changes to armv6 and NEON assembly.
      
      Change-Id: I83202ffdbaf83f6e5dd69f4ba2519fcf0b13b3ba
      4a91541c
  2. 11 Nov, 2011 1 commit
  3. 10 Nov, 2011 2 commits
  4. 09 Nov, 2011 9 commits
  5. 08 Nov, 2011 9 commits
  6. 05 Nov, 2011 2 commits
    • James Zern's avatar
      fix file permissions · f89ea343
      James Zern authored
      all of googletest import (0ab00a22) was marked executable
      
      Change-Id: Id7b7ee03efc21ab998bb03349bd91644e8af25da
      f89ea343
    • Fritz Koenig's avatar
      Compiler warning fix for const array. · f0c01413
      Fritz Koenig authored
      Fix compiler warning for passing a non const array
      to a function expecting a const array by using an
      intermediary pointer and casting.
      
      Change-Id: I9bdd358ebdc926223993fb8fb2098ffedd2f3fc7
      f0c01413
  7. 04 Nov, 2011 5 commits
  8. 03 Nov, 2011 2 commits
  9. 02 Nov, 2011 1 commit
  10. 01 Nov, 2011 5 commits
  11. 31 Oct, 2011 1 commit
  12. 28 Oct, 2011 2 commits
    • Yaowu Xu's avatar
      added code to clear 2nd order block when appropriate · 88e24f07
      Yaowu Xu authored
      It is discovered that in rare situations the 2nd order block may
      produce a few small magnitude coefficients that has no effect on
      reconstruction. The situations are a combination of low quantizer
      values (high quality) and low energy in residual signals (content
      dependent). This commit added code to detect such cases and reset
      the 2nd order block to all 0.
      
      Patch 1 to 4 used code to do all-zero-check on idct result buffer,
      and tests on derf set showed a consistent gain of .12%-.14% on all
      metrics.But due to a recent change Ie31d90b, the idct result buffer
      is not longer populated. So patch 5&6 use an alternative method to
      detect the situations. Tests on derf set now shows a consistent
      quality gain of .16%-.20%.
      
      As suggested by Jim, Patch 7&8 removed the condition of all first
      order block not having any coefficient, instead we reset 2nd order
      coefficients to all 0 if sum of absolute value of the coefficients
      is small. So it does slightly more than just detecting the oddity
      as discussed above, but tests on derf set now show a consistent
      gain of .20%-.23% on all metrics.
      
      It is worth noting here that this change does not have any effect
      on mid/high quantizer range, it only affects the quantizer value
      18 or blow. Within this range, the change helps compression by up
      to 2.5% on clips in the derf set.
      
      Change-Id: I718e19cf59a4fc2462cb7070832759beb9f7e7dd
      88e24f07
    • Scott LaVarnway's avatar
      Merge "Improved decode_split_mv()" · e0309e15
      Scott LaVarnway authored
      e0309e15